1 /* 2 * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include "namespace.h" 34 #include <signal.h> 35 #include <errno.h> 36 #include <stdlib.h> 37 #include <pthread.h> 38 #include "un-namespace.h" 39 40 #include "thr_private.h" 41 42 #undef pthread_cleanup_push 43 #undef pthread_cleanup_pop 44 45 /* old binary compatible interfaces */ 46 __weak_reference(_pthread_cleanup_push, pthread_cleanup_push); 47 __weak_reference(_pthread_cleanup_pop, pthread_cleanup_pop); 48 49 void 50 __pthread_cleanup_push_imp(void (*routine)(void *), void *arg, 51 struct _pthread_cleanup_info *info) 52 { 53 struct pthread *curthread = _get_curthread(); 54 struct pthread_cleanup *newbuf; 55 56 newbuf = (void *)info; 57 newbuf->routine = routine; 58 newbuf->routine_arg = arg; 59 newbuf->onheap = 0; 60 newbuf->prev = curthread->cleanup; 61 curthread->cleanup = newbuf; 62 } 63 64 void 65 __pthread_cleanup_pop_imp(int execute) 66 { 67 struct pthread *curthread = _get_curthread(); 68 struct pthread_cleanup *old; 69 70 if ((old = curthread->cleanup) != NULL) { 71 curthread->cleanup = old->prev; 72 if (execute) 73 old->routine(old->routine_arg); 74 if (old->onheap) 75 free(old); 76 } 77 } 78 79 void 80 _pthread_cleanup_push(void (*routine) (void *), void *arg) 81 { 82 struct pthread *curthread = _get_curthread(); 83 struct pthread_cleanup *newbuf; 84 #ifdef _PTHREAD_FORCED_UNWIND 85 curthread->unwind_disabled = 1; 86 #endif 87 if ((newbuf = (struct pthread_cleanup *) 88 malloc(sizeof(struct pthread_cleanup))) != NULL) { 89 newbuf->routine = routine; 90 newbuf->routine_arg = arg; 91 newbuf->onheap = 1; 92 newbuf->prev = curthread->cleanup; 93 curthread->cleanup = newbuf; 94 } 95 } 96 97 void 98 _pthread_cleanup_pop(int execute) 99 { 100 __pthread_cleanup_pop_imp(execute); 101 } 102